This manual covers the 2006 Arctic Cat T660 Turbo ST snowmobile. Engineered for reliability and performance, this model is designed for demanding snowmobile enthusiasts. Its robust construction and advanced features ensure a superior riding experience across various terrains. This service repair manual provides comprehensive information to keep your T660 Turbo ST operating at its peak. The purpose of this English-language Service Repair Manual is to provide detailed guidance for the service, maintenance, and troubleshooting of your Arctic Cat T660 Turbo ST. It includes step-by-step instructions, top-quality diagrams, highly detailed exploded pictures, and in-depth illustrations covering complete disassembly. Manufacturers' specifications and technical information are included, making this manual an essential resource for both do-it-yourself owners and experienced mechanics.